<template>
  <div class="login_container">
    <!-- 头像区域 -->
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 表单登录区域 -->
      <el-form
        ref="formloginRef"
        :model="formlogin"
        :rules="forloginlules"
        label-width="0"
        class="login_form"
      >
        <el-form-item prop="username">
          <el-input v-model="formlogin.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formlogin.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  // 表单规则的判断
  data() {
    return {
      formlogin: {
        username: 'admin',
        password: '123456'
      },
      forloginlules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入用户密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  // 表单重置规则
  methods: {
    reset() {
      console.log(this)
      this.$refs.formloginRef.resetFields()
    },
    // 登录规则表单预 验证
    login() {
      this.$refs.formloginRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.formlogin)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')

        /*   思路: 1.登录成功之后需要将token保存到客户端的sessionStorage中 sessionStorage是window对象下面的所以通过winodw调用
                        1-1.项目中,除了登录以外的其他api接口,必须通过登录之后才能访问
                        1-2.token只应在当前网站打开期间生效,所以讲token保存在sessionStrage中
            2.通过编程式导航跳转到主页页面,可以调用this.$router.pushu("路径") */
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/Home')
      })
    }
  }
}
</script>
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);

  img {
    height: 100%;
    width: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
